go to google and in the search engine type ...
pack google (leave a space between pack and google) the result should be the download link to a very powerful bit of software absolutely free called PcTools Spyware Doctor. Select the item and download it, upon completion it will self install. After completion you can run a full scan and the trojan (s) will be detected and can be removed free. I have been using this for three years now it is brilliant.
chris, March 2010